2 files changed, 11 insertions, 14 deletions
diff --git a/src/utils/adopter.js b/src/utils/adopter.js
index 5d5d1f0..5de4038 100644
--- a/src/utils/adopter.js
+++ b/src/utils/adopter.js
@@ -1,17 +1,15 @@
 import { capitalize } from './utils.js'
 import { ns } from '../modules/core/namespaces.js'
-import globals from '../utils/window.js'
+import { globals } from '../utils/window.js'
 import Base from '../types/Base.js'
 
-const { window, document } = globals
-
 const elements = {}
 export const root = Symbol('root')
 
 // Method for element creation
 export function makeNode (name) {
   // create element
-  return document.createElementNS(ns, name)
+  return globals.document.createElementNS(ns, name)
 }
 
 export function makeInstance (element) {
@@ -26,7 +24,7 @@ export function makeInstance (element) {
   }
 
   if (typeof element === 'string' && element.charAt(0) !== '<') {
-    return adopt(document.querySelector(element))
+    return adopt(globals.document.querySelector(element))
   }
 
   var node = makeNode('svg')
@@ -40,7 +38,7 @@ export function makeInstance (element) {
 }
 
 export function nodeOrNew (name, node) {
-  return node instanceof window.Node ? node : makeNode(name)
+  return node instanceof globals.window.Node ? node : makeNode(name)
 }
 
 // Adopt existing svg elements
@@ -51,7 +49,7 @@ export function adopt (node) {
   // make sure a node isn't already adopted
   if (node.instance instanceof Base) return node.instance
 
-  if (!(node instanceof window.SVGElement)) {
+  if (!(node instanceof globals.window.SVGElement)) {
     return new elements.HtmlNode(node)
   }
 
diff --git a/src/utils/window.js b/src/utils/window.js
index f44ebb9..9e51339 100644
--- a/src/utils/window.js
+++ b/src/utils/window.js
@@ -1,10 +1,9 @@
-const globals = {
-  window, document
+export const globals = {
+  window: typeof window === 'undefined' ? null : window,
+  document: typeof document === 'undefined' ? null : document
 }
 
-export default globals
-
-export function registerWindow (w) {
-  globals.window = w
-  globals.document = w.document
+export function registerWindow (win = null, doc = null) {
+  globals.window = win
+  globals.document = doc
 }